Masada (A&K) Hop-up chamber, spring, switch, hop up bucking and rivet - Wii Tech
Wii Tech Rubber Stock Pad for KWA / KSC / UMAREX MP7 Series GBB SMG's, Accessories & Parts, Gas Gun Parts, Rifle Receiver Parts - Evike.com Airsoft Superstore
Wii Tech - High End Airsoft Parts, Accessories & Replicas
WII TECH M870 ( T.Marui ) CNC 6063 Aluminum Top Gas Loading Nozzle For TM M870
Finally got my MAC-11 steel kit working reliably. Wii-tech aluminum nozzle to the rescue : r/GasBlowBack
Wii Tech CNC Aluminum Hopup chamber Set for A&K / G&P ACR Series Airsoft AEG Rifles, Accessories & Parts, AEG Internal Parts, Hop-Up, ACR / Masada Series Hop-Up - Evike.com Airsoft Superstore